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Erin Laughton

on 19 May 2014

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Transcript of Dandelions

A Description of a Dandelion....
-> hundreds of different species from regions of Europe, Asia & North America...
What are Dandelions used for?
Dandelions can be used for.........
Origins & Current Locations of Dandelions
Taraxacum Officinale
-> can grow to a height of nearly 12 inches....
-> has deeply notched, toothy-like leaves & long green stems...
-> the flowers open in the morning, and close at night & on cloud covered days...
-> the leaves are grooved & act like a funnel to get rain to its roots...
-> its roots are dark brown, brittle & fleshy-like...
-> is also referred to as Lion's tooth, Priest's crown, or Swines's snout...
Dandelion seed
Dandelion flower
Dandelion seeds
Roots below ground
-> Medicinal uses
-> Food
Medicinal uses include...
Native Americans boiled dandelions in water
and was used to treat...
-> Asians would use it for...
-> stomach problems
-> Europeans would use Dandelions for
remedies that would treat...
-> liver problems
-> boils
-> fever
-> diabetes
-> eye problems
-> diarrhea
-> breast problems
-> appendicitis
-> swelling
-> heart burn
-> skin problems
-> kidney disease
-> upset stomach
Dandelions are used for...
-> gallbladder problems
-> appetite stimulants
Dandelions are a rich source of vitamins A, B, C & D
Also, Dandelions have lots of minerals like potassium & zinc
Dandelions can be made into...
-> coffee substitutes
-> salads
-> sandwiches
-> wines
-> teas
-> Dandelions originated from regions in Europe & Asia...
-> Dandelions most likely were transported by Europeans for medicinal purposes to North America...
-> Dandelions reside on lawns, meadows, gardens, & fields etc. they are usually referred to as pesky weeds...
What is the Niche of a Dandelion?
-> Dandelions feed herbivores & omnivores
-> Dandelions are producers (bottom trophic level)
-> requires sunlight, a water source, and rich soil to thrive...
-> they produce pollen & nectar
-> approximately 93 different species of insects use pollen & nectar from dandelions (eg. bees use nectar for honey etc.)
-> needs a temperature between 50-77 degrees F or 10-25 degrees C to grow.......
Dandelion Trophic Level
Societal, Economical & Environmental Consequences
Societal Consequences
Economical Consequences
Environmental Consequences
-> competitions for best lawn award within a community...
-> pressure of acceptance by onlookers of your lawn...
-> improves economy because people purchase pesticides or garden tools to remove Dandelions...
-> people may purchase Dandelions for medicinal purposes, or as a food or drink...
-> people possibly could hire lawn workers to remove weeds (e.g., Dandelions)...
Food Web
Past & Present
-> pesticides used to control dandelions may harm wildlife or could be transferred into our water supply...
-> possible neighbourhood disputes about dandelions being removed or to stop using pesticides to get rid of the dandelions...
Small bird
Recommendations or Solutions
-> a Dandelion flower head is composed of hundreds of smaller florets...
-> yellow Dandelions head sprouts
-> the head dies & falls off
-> seeds emerge and disperse
-> seeds are carried to a secondary location usually by wind
-> process starts again...
Life of a Dandelion...
-> pull them out early before they become too numerous...
-> make sure to remove the roots otherwise they will come back...
-> get a companion to take them out for you...

Environmental Consequences
As dandelions are known to be one of the most invasive species in the world, they are not good for grass, or any plant around them. Dandelions invade any area that has grass, and its roots starts eating all the grass and plants around it to make space for it. They can also grow REALLY large, which can cause more plants to die.
Since dandelions reproduce really quickly, if they start in a backyard/small area of land, they’ll easily fill the whole place with dandelions, and kill most of the other plants, and over time can cause local extinction of a species.
Dandelions, on the map are located everywhere in North America. They’re all over the continent, and have no specific place of reproduction, as they reproduce everywhere. They are found in just about every single block in North America, however, they’re found in larger quantities in waste areas where there is a lot of garbage etc.

New Niche
Dandelions are invasive species that start off by 1 plant, and spread widely over a short period of time. They have sharp leaves on their stem, sometimes with tiny hair on them and sometimes hairless. They get eaten by over 90 insect species, which makes them sometimes important for bugs in certain areas.
Dandelions don’t grow in areas with high, or low temperatures, and have certain requirements to live in an area. They can not live in areas like Africa, where the temperature is really high, and grass isn’t found, but they can live in areas like North America where they can find a lot of grass, and a fairly good condition.
How human activities contributed to the problem. Since humans move all over the planet, they carried the seeds of Dandelions all over the place. How some humans are careless, Dandelions would spread all over their backyards too!
By: Erin Laughton & Mohammed Nassef
North America
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Mohammed's References:
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